diff options
Diffstat (limited to 'src/southbridge/amd')
| -rw-r--r-- | src/southbridge/amd/pi/hudson/early_setup.c | 18 |
1 files changed, 17 insertions, 1 deletions
diff --git a/src/southbridge/amd/pi/hudson/early_setup.c b/src/southbridge/amd/pi/hudson/early_setup.c index 29809f1aec..553add9f5d 100644 --- a/src/southbridge/amd/pi/hudson/early_setup.c +++ b/src/southbridge/amd/pi/hudson/early_setup.c @@ -25,12 +25,12 @@ #include <cbmem.h> #include "hudson.h" #include "pci_devs.h" +#include <Fch/Fch.h> #if IS_ENABLED(CONFIG_HUDSON_UART) #include <cpu/x86/msr.h> #include <delay.h> -#include <Fch/Fch.h> void configure_hudson_uart(void) { @@ -174,4 +174,20 @@ int s3_load_nvram_early(int size, u32 *old_dword, int nvram_pos) return nvram_pos; } +void hudson_clk_output_48Mhz(void) +{ + u32 data, *memptr; + + /* + * Enable the X14M_25M_48M_OSC pin and leaving it at it's default so + * 48Mhz will be on ball AP13 (FT3b package) + */ + memptr = (u32 *)(ACPI_MMIO_BASE + MISC_BASE + FCH_MISC_REG40 ); + data = *memptr; + + /* clear the OSCOUT1_ClkOutputEnb to enable the 48 Mhz clock */ + data &= (u32)~(1<<2); + *memptr = data; +} + #endif |